FAG SS3112 Automatic Transmission Seal - Rear
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FAG

FAG SS3112 Automatic Transmission Seal - Rear

Brand FAG SS3112
Position Rear
2.125
53.975
Bore Diameter 2.88
Bore Diameter 73.152
Seal Outside Diameter 2.885
Seal Outside Diameter 73.279
Seal Type Metal; Spring; Auxilary lip
Seal Width 2.125
Seal Width 14.021
Sealing Material Vamac
Fits Chevrolet and GMC · 30 vehicles

Seal type. Metal, spring, and auxiliary lip construction helps keep contaminants out.

Vamac sealing material. Built to resist dirt, dust, and moisture while retaining grease.

OE-quality standards. Designed with suppliers to meet FAG's quality requirements.

Cross-references Gates 21236, National 2457 and 4133112100 for the same application. See all 3.

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Automatic Transmission Seal for Heavy-Duty Rear Applications

FAG SS3112 is an automatic transmission seal built for demanding rear axle and wheel-end service on select Chevrolet and GMC heavy-duty vehicles. It uses a metal spring design with an auxiliary lip and Vamac sealing material to help keep contaminants out and retain grease at the bearing interface.

Compatible With 1992-1997 Chevrolet C3500, rear; 1992-1997 Chevrolet K3500, rear; 1992-1997 Chevrolet P30, rear; 1992-1997 GMC K3500, rear; and 1992-1997 GMC P3500, rear.

Key Features

  • FAG SS3112 automatic transmission seal for rear-position applications
  • Seal type: metal, spring, and auxiliary lip construction
  • Sealing material: Vamac
  • Bore diameter: 2.88 in. / 73.152 mm
  • Seal outside diameter: 2.885 in. / 73.279 mm
  • Seal width: 2.125 in. / 53.975 mm
  • Cross-reference: Gates 21236 and National 2457 for the same application

Product Details

SS3112 is engineered to meet vehicle manufacturer specifications for sealing performance in demanding wheel-end and transmission-related service environments. The metal spring and auxiliary lip help maintain sealing contact, while the Vamac material is selected for durability in applications exposed to dirt, dust, and moisture. This FAG seal is specified for rear use on 1992-1997 Chevrolet C3500, Chevrolet K3500, Chevrolet P30, GMC K3500, and GMC P3500 models with 15,000 lb. G.V.W. notes listed in the fitment data.

Common Problems This Seal Can Address

  • Grease loss at the bearing or seal interface
  • Contamination from dirt, dust, and road moisture
  • Seal wear that can lead to leakage
  • Reduced sealing contact in rear service applications
  • Replacement needs on Chevrolet C3500, K3500, P30, and GMC K3500, P3500 rear positions

Installation Notes and Tips

Verify bore diameter, seal outside diameter, and seal width before installation to confirm the correct match for the application. Inspect the sealing surface, housing, and adjacent components for wear or damage before pressing in the new seal. For best results, install on a clean, dry surface and follow the vehicle service procedure for rear seal replacement on the specific Chevrolet or GMC model.

Quality Assurance

FAG designs seals to meet manufacturer specifications and works with suppliers to maintain its quality standards. SS3112 is built for demanding sealing requirements where contamination control and grease retention are critical to bearing life.

This part fits 30 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1997ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1997ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1997ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1997GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1997GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1996ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1996ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1996ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1996GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1996GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1995ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1995ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1995ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1995GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1995GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1994ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1994ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1994ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1994GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1994GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1993ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1993ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1993ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1993GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1993GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1992ChevroletC3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1992ChevroletK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1992ChevroletP30Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1992GMCK3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
1992GMCP3500Rear15,000 lb. G.V.W.; Schaeffler Seal Global Number 413 3112 100
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — 21236National — 24574133112100